{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:PPQEFJ7VSKE56S77TK7MOZDW7H","short_pith_number":"pith:PPQEFJ7V","canonical_record":{"source":{"id":"2507.02475","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-03T09:30:47Z","cross_cats_sorted":[],"title_canon_sha256":"e87a80854d9be514807c825ea3929b479bf260ec204efaded45d10a8966098b9","abstract_canon_sha256":"b9a1799b40d30a428e570175d5f37339fd8aa8467248aecf3fca402bac3fd192"},"schema_version":"1.0"},"canonical_sha256":"7be042a7f59289df4bff9abec76476f9f6de1ef4721c1be0dcdce7d013f71f59","source":{"kind":"arxiv","id":"2507.02475","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.02475","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"arxiv_version","alias_value":"2507.02475v1","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.02475","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"pith_short_12","alias_value":"PPQEFJ7VSKE5","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"pith_short_16","alias_value":"PPQEFJ7VSKE56S77","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"pith_short_8","alias_value":"PPQEFJ7V","created_at":"2026-07-05T11:31:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:PPQEFJ7VSKE56S77TK7MOZDW7H","target":"record","payload":{"canonical_record":{"source":{"id":"2507.02475","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-03T09:30:47Z","cross_cats_sorted":[],"title_canon_sha256":"e87a80854d9be514807c825ea3929b479bf260ec204efaded45d10a8966098b9","abstract_canon_sha256":"b9a1799b40d30a428e570175d5f37339fd8aa8467248aecf3fca402bac3fd192"},"schema_version":"1.0"},"canonical_sha256":"7be042a7f59289df4bff9abec76476f9f6de1ef4721c1be0dcdce7d013f71f59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:31:19.000927Z","signature_b64":"mZ8gXTZyMGhihsZqMqt55xHrsuWzrsZlwnN3CvRoC2W1OMVyY90hfBKYTJYQwAdNqJCL+bZC2G1EuhrwLt00DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7be042a7f59289df4bff9abec76476f9f6de1ef4721c1be0dcdce7d013f71f59","last_reissued_at":"2026-07-05T11:31:19.000480Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:31:19.000480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.02475","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:31:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wk5h3IlxD0z57S/ULrHbcJDOpGBVuFKHUH9NBEl15rToA6ga7W1eXdZoSmcz1xlydkKPfZzmfWgTwaCiTjRoAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:07:04.033366Z"},"content_sha256":"f3cbc956bd568cbc8f4e082b94a063d23f5b8eb9e7dc62db10dc6f6ed0d03740","schema_version":"1.0","event_id":"sha256:f3cbc956bd568cbc8f4e082b94a063d23f5b8eb9e7dc62db10dc6f6ed0d03740"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:PPQEFJ7VSKE56S77TK7MOZDW7H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracing the light: Identification for the optical counterpart candidates of binary black-holes during O3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Bingzhou Gao, Lei He, Mingshen Zhou, Ning Jiang, Purun Zou, Rui Niu, Runduo Liang, Wen Zhao, Ye-Fei Yuan, Zhengyan Liu, Zhen-Yi Cai, Zi-Gao Dai","submitted_at":"2025-07-03T09:30:47Z","abstract_excerpt":"The accretion disks of active galactic nuclei (AGN) are widely considered the ideal environments for binary black hole (BBH) mergers and the only plausible sites for their electromagnetic (EM) counterparts. Graham et al.(2023) identified seven AGN flares that are potentially associated with gravitational-wave (GW) events detected by the LIGO-Virgo-KAGRA (LVK) Collaboration during the third observing run. In this article, utilizing an additional three years of Zwicky Transient Facility (ZTF) public data after their discovery, we conduct an updated analysis and find that only three flares can be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.02475","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.02475/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:31:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mS+MapnZhtxwkOEpLpdi0RDCYK9FTryEPN7cscBTJ2A4oVnFoRuOim1KOn0bnCHrl69FoJk8kHGvrquGv27+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T17:07:04.033895Z"},"content_sha256":"1d9dd427931b3cc490c031676ea61bb2414189b41e0f37b6e270b8eabbbee22c","schema_version":"1.0","event_id":"sha256:1d9dd427931b3cc490c031676ea61bb2414189b41e0f37b6e270b8eabbbee22c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PPQEFJ7VSKE56S77TK7MOZDW7H/bundle.json","state_url":"https://pith.science/pith/PPQEFJ7VSKE56S77TK7MOZDW7H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PPQEFJ7VSKE56S77TK7MOZDW7H/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-16T17:07:04Z","links":{"resolver":"https://pith.science/pith/PPQEFJ7VSKE56S77TK7MOZDW7H","bundle":"https://pith.science/pith/PPQEFJ7VSKE56S77TK7MOZDW7H/bundle.json","state":"https://pith.science/pith/PPQEFJ7VSKE56S77TK7MOZDW7H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PPQEFJ7VSKE56S77TK7MOZDW7H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PPQEFJ7VSKE56S77TK7MOZDW7H","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b9a1799b40d30a428e570175d5f37339fd8aa8467248aecf3fca402bac3fd192","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-03T09:30:47Z","title_canon_sha256":"e87a80854d9be514807c825ea3929b479bf260ec204efaded45d10a8966098b9"},"schema_version":"1.0","source":{"id":"2507.02475","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.02475","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"arxiv_version","alias_value":"2507.02475v1","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.02475","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"pith_short_12","alias_value":"PPQEFJ7VSKE5","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"pith_short_16","alias_value":"PPQEFJ7VSKE56S77","created_at":"2026-07-05T11:31:19Z"},{"alias_kind":"pith_short_8","alias_value":"PPQEFJ7V","created_at":"2026-07-05T11:31:19Z"}],"graph_snapshots":[{"event_id":"sha256:1d9dd427931b3cc490c031676ea61bb2414189b41e0f37b6e270b8eabbbee22c","target":"graph","created_at":"2026-07-05T11:31:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2507.02475/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The accretion disks of active galactic nuclei (AGN) are widely considered the ideal environments for binary black hole (BBH) mergers and the only plausible sites for their electromagnetic (EM) counterparts. Graham et al.(2023) identified seven AGN flares that are potentially associated with gravitational-wave (GW) events detected by the LIGO-Virgo-KAGRA (LVK) Collaboration during the third observing run. In this article, utilizing an additional three years of Zwicky Transient Facility (ZTF) public data after their discovery, we conduct an updated analysis and find that only three flares can be","authors_text":"Bingzhou Gao, Lei He, Mingshen Zhou, Ning Jiang, Purun Zou, Rui Niu, Runduo Liang, Wen Zhao, Ye-Fei Yuan, Zhengyan Liu, Zhen-Yi Cai, Zi-Gao Dai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-03T09:30:47Z","title":"Tracing the light: Identification for the optical counterpart candidates of binary black-holes during O3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.02475","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f3cbc956bd568cbc8f4e082b94a063d23f5b8eb9e7dc62db10dc6f6ed0d03740","target":"record","created_at":"2026-07-05T11:31:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b9a1799b40d30a428e570175d5f37339fd8aa8467248aecf3fca402bac3fd192","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-03T09:30:47Z","title_canon_sha256":"e87a80854d9be514807c825ea3929b479bf260ec204efaded45d10a8966098b9"},"schema_version":"1.0","source":{"id":"2507.02475","kind":"arxiv","version":1}},"canonical_sha256":"7be042a7f59289df4bff9abec76476f9f6de1ef4721c1be0dcdce7d013f71f59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7be042a7f59289df4bff9abec76476f9f6de1ef4721c1be0dcdce7d013f71f59","first_computed_at":"2026-07-05T11:31:19.000480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:31:19.000480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mZ8gXTZyMGhihsZqMqt55xHrsuWzrsZlwnN3CvRoC2W1OMVyY90hfBKYTJYQwAdNqJCL+bZC2G1EuhrwLt00DA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:31:19.000927Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.02475","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3cbc956bd568cbc8f4e082b94a063d23f5b8eb9e7dc62db10dc6f6ed0d03740","sha256:1d9dd427931b3cc490c031676ea61bb2414189b41e0f37b6e270b8eabbbee22c"],"state_sha256":"13fae6f4fbcb2309496edd688eb30be828bfd6f60e915ecb579ac77b3acf1cac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rfk2BsCQJcmnwrBrIwbq4NNIdam9BoSvAxMeZqmXNa6qNvhtSUBbX0+cW0OZXYWSXTk/XwH1RD3aTeUAeO4gAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T17:07:04.038103Z","bundle_sha256":"c547ab6bd7a52df2eaaafe586bcf89fd754d85afd54fea61f4ccd3481aeb871c"}}